Why does this skill emphasize using stderr for errors?

To ensure scriptability and piping support, it keeps the primary data stream on stdout separate from diagnostic or error messages on stderr.

What crates does this skill support for Rust CLI development?

It provides expert guidance on using clap for parsing, ratatui for TUIs, indicatif for progress bars, and figment/config for layered configuration.

How does it handle configuration priority?

It enforces standard precedence rules where CLI arguments override environment variables, which override configuration files, which override defaults.

Does this skill handle terminal user interface (TUI) design?

Yes, it includes implementation patterns for interactive prompts and complex terminal UIs using crates like ratatui and crossterm.

Rust CLI Development

Name: Rust CLI Development
Author: lywa1998

bylywa1998

開発者ツール

Builds robust, ergonomic command-line tools in Rust using industry-standard libraries and best practices.

概要

This skill equips Claude with specialized knowledge for architecting and implementing professional CLI applications in Rust. It enforces critical domain constraints such as proper error reporting to stderr, layered configuration management (CLI, env, files), and non-zero exit codes. By leveraging crates like clap, ratatui, and indicatif, it helps developers create type-safe argument parsers, interactive TUIs, and responsive progress indicators, ensuring production-grade user ergonomics and scriptability.

主な機能

Automated argument parsing with clap derive macros
Professional UX with progress bars and colored output
0 GitHub stars
Layered configuration handling (CLI > Environment > Files)
Interactive TUI development with Ratatui and Crossterm
Standard-compliant error handling and exit codes

ユースケース

Building an interactive terminal dashboard for real-time monitoring
Creating a high-performance system utility with subcommands and flags
Developing scriptable CLI tools that follow POSIX standards for data piping

概要

主な機能

Automated argument parsing with clap derive macros
Professional UX with progress bars and colored output
0 GitHub stars
Layered configuration handling (CLI > Environment > Files)
Interactive TUI development with Ratatui and Crossterm
Standard-compliant error handling and exit codes

ユースケース

Building an interactive terminal dashboard for real-time monitoring
Creating a high-performance system utility with subcommands and flags
Developing scriptable CLI tools that follow POSIX standards for data piping